2 or so meetings back there was some demonstration of flashing the FON devices thru the on board serial port. The operation as I seem to understand it has some complexities. One of which is needing to open circuit a lead in the comm path until after a mode change is shown. That indication showing on a terminal screen as a + sign if I recall properly. Based on that having timing issues I have not yet tried a flash here. If someone with better scripting skills than I have could script -Monitoring for that + and thence controlling either a relay or other switching device to make that connection. Hand tapping connectors reminds me conceptually of "Field Flashing" older automotive generators. Which later became obsolete for other reasons.

The summary query then becomes- I wonder if a program controlled relay could make and break that serial path for semi-automating the flash process.